It is a really beautiful piece of wood. It will be weak due to the grain , but keep the screws tight and don't drop it and you should be fine.
Pete the Wood Dude
No offense intended, but you are mistaking figure for grain. Wood grain is straight through the wrist in that stock.It's a rift sawn piece of Claro (Juglans hindsii) about one blank off of quarter sawn. It's a highly figured piece of wood, and the actual grain is very hard to see - especially in pictures.
Here is another one where the grain is next to impossible to see due to the figure:
That's from a quarter sawn Turkish walnut (Juglans regia) stock blank, now a stock on an Ugartechea model 41 in .410.
Here is another one, also a piece of Regia. Grain just cannot be seen. I had to look at the edges and sides of the blank to get an idea of grain flow (which is actually dead straight from head to butt). This blank became the stock of a Martin Ugarteburu model 115.
At first glance that looks like a horrible piece of wood with no acceptable layout. But what we are seeing is mineralization that is visually distorted by the medullary rays. The actual grain structure is completely hidden.